You can see System Requirements in wiki/help page
Windows
Windows XP SP3, Windows 2003, Windows 2008, Windows Vista, Windows 7 (32/64 bit)
Microsoft .NET Framework 3.5
On Windows 2008 R2 install from Administrative Tools > Server Manager > Features
WinPcap(for bandwidth monitor)
On Windows XP/2003 it is recommended that you disable Dr. Watson How to disable or enable Dr. Watson for Windows
And you add ports to the Firewall:
Default Ports Used by TCAdmin
Windows
Web/Monitor
8880, 8881 TCP
FTP
8821 TCP
FTP Passive Mode
5000 to 5100 TCP
And finally, free trial license only accept 2 remote servers.
See the wiki, have enough information:
http://help.tcadmin.com/Main_Page